Category: Vector

Question Number 42357 by preet last updated on 24/Aug/18 Answered by tanmay.chaudhury50@gmail.com last updated on 24/Aug/18 $$\overrightarrow{v}=\frac{d\overrightarrow{r}}{dt}=\frac{d}{dt}(3ti-t^{2}j+4k)$$$$\overrightarrow{v}=3i-2tj+0.k$$$$\left(\overset{\rightarrow}…

Question Number 42199 by rahul 19 last updated on 20/Aug/18 Answered by tanmay.chaudhury50@gmail.com last updated on 20/Aug/18 $$a)\left\{(\mathit{a}+\mathit{b})\times (\mathit{b}+\mathit{c})\right\}.(\mathit{c}+\mathit{a})$$$$(\mathit{a}\times \mathit{b}+\mathit{a}\times \mathit{c}+\mathit{b}\times \mathit{b}+\mathit{b}\times \mathit{c}).(\mathit{c}+\mathit{a})$$$$\left(\mathit{a}\times \mathit{b}\right).\mathit{c}+\left(\mathit{b}\times \mathit{c}\right).\mathit{a}=2v$$$$\left[{abc}\right]=\left[{bca}\right]=\left[{cab}\right]={v} \…

Question Number 42180 by rahul 19 last updated on 19/Aug/18 $$\mathrm{The}\mathrm{median}\mathrm{AD}\mathrm{of}\mathrm{triangle}\mathrm{ABC}\mathrm{is}$$$$\mathrm{bisected}\mathrm{at}\mathrm{E}\mathrm{and}\mathrm{BE}\mathrm{meets}\mathrm{AC}\mathrm{at}\mathrm{F}.$$$$\mathrm{Find}\mathrm{AF}:\mathrm{FC}.$$ Answered by MJS last updated on 19/Aug/18 $$\mathrm{you}\:\mathrm{can}\:\mathrm{put}\:\mathrm{any}\:\mathrm{triangle}\:{abc}\:\mathrm{in}\:\mathrm{this}\:\mathrm{position}:…

Question Number 41606 by psyche-ace last updated on 10/Aug/18 $$4{\mathbf{x}}^4+16{\mathbf{x}}^3+24{\mathbf{x}}^2-9\mathbf{x}-1=0$$$$\mathbf{using}\mathbf{any}\mathbf{method}.\mathbf{find}\mathbf{real}\mathbf{value}\mathbf{of}\mathbf{x}\mathbf{that}\mathbf{satisfy}\mathbf{the}\mathbf{polynomial}$$ Answered by MJS last updated on 10/Aug/18 $${f}\left({x}\right)={x}^{\mathrm{4}}…

Question Number 105904 by bemath last updated on 01/Aug/20 $$\int \frac{\sin x}{5-\sin 2x}dx?$$ Answered by bemath last updated on 01/Aug/20 Commented by Her_Majesty last updated on…